If you didn't even see bass in the second one and caught fish in the first one, I would just stick to the first one. Even though I guide on Florida's large natural lakes, I love fishing smaller bodies of untouched water. Over time, I've learned that some ponds just aren't productive, especially compared to others, and so I usually avoid them.
If you were determined to catch fish at the second pond, I would throw anything that mimics a bluegill - if that's all you saw there, the bass in the pond must prey on them to some degree, and that gives you a place to start. Alternatively, catching bluegill is pretty fun in it's own right, and here in Florida, we can even use them as live bait.
Best of luck,
Capt. Dalton